Deactivate an element on a registered layer.
The element stays mounted — only its keyboard-active flag is set to false,
so the keyboard engine stops dispatching key events to its bindings while
keeping all registration data intact for a later reactivation.
Deactivate an element on a registered layer. The element stays mounted — only its keyboard-active flag is set to
false, so the keyboard engine stops dispatching key events to its bindings while keeping all registration data intact for a later reactivation.